OFFSET
1,1
COMMENTS
Terms greater than 1000 are often only strong pseudoprimes.
a(8) > 10^5. - Robert Price, Jun 12 2012
PROG
(PARI) is(n)=ispseudoprime(37^n-36^n) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
a(6) and a(7) (computed by Adam Marciniec) from Robert Price, Jun 12 2012
STATUS
approved